1. Chapter 12: Biodiversity: Preserving Landscapes

2. 12.1 World Forests Boreal and tropical forests are most abundant
Forests provide many valuable products
Tropical forests are being cleared rapidly
Temperate forests also are threatened
Lowering Your Forest Impacts
Forest Thinning and Salvage Logging

3. 2007 Tornado Swath, Wisconsin

4. 12.2 Grasslands Grazing can be sustainable or damaging
Overgrazing threatens many U.S. rangelands
Ranchers are experimenting with new methods

5. 12.3 Parks and Preserves Many countries have created nature preserves
Yellowstone, 1872
“America’s Best Idea”
Not all preserves are preserved
Poaching
Illegal Logging
Marine ecosystems need greater protection

6. 12.3 Parks and Preserves
Conservation and economic development can work together
Being a Responsible Ecotourist
Native people can play important roles in nature protection
Species survival can depend on preserve size and shape